how to send data from JSP based on a condition to Controller

[Manu ravi]

Hi,
When a user enters data in a table, I want to send unique data to controller.
I have used javascript to get the values of each row in table. I have compared each row with every other row to ensure that there are no duplicates. Using

<input type="hidden">

the data is being sent to controller. However this sends all the data to the controller.
My question is how do I send only the valid data that I find through javascript to the controller? I am using spring framework.

[Jack Numen]

Seprate the Unique data you wanna send in other form.

<form name="uniquedataForm" id="unique">
<input type="hidden" name="username" value="jack"/>
<input type="checkBox" name="uniquedatasender">Send this only
</form>

Call the required submission function in Javascipt

<input type="button" onclick="sendUniqueData();">
<script>
function sendUniqueData(){
var username = document.uniquedataForm.username;
if(null!=username)document.uniquedataForm.submit();
}
</script>

Code might not be exaclty like this but the idea is submitting only required values based on some check parameter..Ita can be a checkbox or some condition which you can frame in your Javascript

[Manu ravi]

My problem is that I got what you are saying but I doubt the architecture of the application would let me do that...
I have a table in jsp that goes like:

<c:iterate name="tablewithids" id="key">
<tr><td>
            <input type="hidden" name="myid" value="<c:write name="key" property="tableid" />" />
</td></tr>
</c:iterate>

I am using javascript to get each row in the table. I am displaying existing rows in table and allowing user to add new rows. When I add new rows, onsubmit it calls javascript function:

function beforeSubmit()
{
tablerows = document.getElementsByName("Tbl")[0].rows;
    for(var i=0;i<pagetable.length;i++)
     {
        var curRow= getChildByName(tablerows[i],"myid").value;
        for(var j=0;j<pagetable.length;j++)
        {
           var iterThroughRow = getChildByName(tablerows[j],"myid").value;
           if(curRow == iterThroughRow)
              alert('duplicate');
           else
              //send data to controller as it was going
         } 
      }
}

[Bear Bibeault]

What the JSP does is irrelevant. That happens on the server long before the JavaScript runs. It's what gets sent as the response to the browser that matters.

[Manu ravi]

so is there no way where i can stop the original data from getting passed to controller?

[Bear Bibeault]

Have you not read the replies?